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Yan KovalevskyPolish cryptographer, mathematician and linguist
Date of Birth: 23.10.1892
Country:  Poland |
Content:
- Early Life and Education
- Cryptographic Career
- Japanese Cryptography and High-Level Positions
- World War II and Exile
- Post-War Emigré
Early Life and Education
Jan Kowalewski was born on October 23, 1892, in Łódź, Poland. He attended a trade high school in Łódź before pursuing a degree in technical chemistry at the University of Liège in Belgium from 1909 to 1913. Fluent in German, French, and Russian, Kowalewski gained valuable engineering knowledge during his military service in the Russian army during World War I.
Cryptographic Career
Polish Cipher BureauAfter returning to Poland in 1919, Kowalewski joined the Polish General Staff's Cipher Bureau, 2nd Department, where he established a network of radio listening stations and a team of cryptographers. He successfully broke several Soviet and insurgent ciphers during the Polish-Soviet War of 1919-1921.
Japanese Cryptography and High-Level Positions
In 1923, Kowalewski served as a cryptographer for Japan, receiving the Order of the Rising Sun for his service. He later graduated from the École Supérieure de Guerre in Paris (1928) and acted as Poland's military attaché in Moscow (1928-1933) and Bucharest (1933-1937).
World War II and Exile
Intelligence Operations and DiplomacyDuring World War II, Kowalewski assisted Polish refugees in Romania and France. He conducted secret negotiations with representatives of Hungary, Romania, and Italy to explore their potential withdrawal from the war and provide assistance to Polish prisoners of war. However, these diplomatic efforts largely failed due to the lack of a clear Western policy towards Eastern Europe.
Post-War Emigré
After the war, Kowalewski settled in London, establishing the monthly journal East Europe and Soviet Russia. He remained an active figure in the Polish independence movement, publishing his memoirs in 1955 and continuing to engage in codebreaking until his death from cancer on October 31, 1965.
